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Questions tagged [imap]

IMAP stands for Internet Message Access Protocol and is the other e-mail protocol along with POP.

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The server does not support the IMAP4 IDLE command

I have a console based application which is running on the server 24X7 to keep checking any incoming emails and perform action on the basis of email information received. It was working fine on ...
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17 views

how to do basic IMAP setup / troubleshooting in Exchange 2013

So I've had an Exchange Server (v2013 with cu21) running on a Windows Server 2012 R2 box for several years now, without many problems. We almost exclusively use Outlook-Exchange integration and ...
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1answer
66 views

Recovering deleted plain text (emails) files from raw disk image

I'm hosting my own linux mail server for my family. Yesterday my father lost all the mails in his Inbox folder. I'm still not sure whether it's due to a terrible user error or compromised password, ...
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1answer
41 views

Postfix DDoS mitigation: how to whitelist IPs for IMAP access to a single mailbox

Does (Zimbra using) Postfix have an option to whitelist IPs or domains for IMAP logins for a specific mailbox only? This is what we would like to achieve: all IPs can open an IMAP connection on port ...
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2answers
37 views

Dovecot imap-login: confusing error? message

I am busy setting up a mailserver with postfix, dovecot and mariadb on a Debian 9 system. Receiving mail fails on port 993 as result of a time-out with this message in/var/log/dovecot.log: imap-...
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1answer
44 views

Outlook and Thunderbird connecting to IMAP server where mail has been deleted

Have a rebuilt IMAP mail server which is missing emails for a time period. I have tried to search but only found articles about migration. Question is, will outlook and thunderbird etc sync such ...
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42 views

Outlook 2016 (version 1080) Not Syncing All Emails

I have a dozen email accounts accessing email via IMAP on our offsite email server. All the other accounts seem to be working fine. One particular user, is reading his emails using Outlook ver 1080. ...
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2answers
74 views

Why isn't disk space reduced after deleting mails through IMAP with Dovecot?

I'm running an email server with OpenSMTPD and Dovecot on Linux and accessing emails using IMAP with a Thunderbird client. When I delete an email in Thunderbird, why doesn't disk space usage go down? ...
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1answer
29 views

Cyrus IMAP mailbox replication. Is it encrypted over the WAN?

Servers are both Debian 9. According to Debian package search they are version 2.5.10. I need to find out if replication as described here Cyrus Documentation: Replication is encrypted over the WAN. ...
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96 views

IMAP to Office 365 migration error

I am migrating mailboxes from an on-premise IMAP server to Office 365. Most of the accounts are migrating fine, but I'm hitting the following error on a handful of accounts. Error: ...
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2answers
159 views

Webmail via imap unix socket - good idea or not?

I'm slowly setting up an email system on a Centos 7 server. The particular software I'm using will consist of postfix, dovecot and roundcube, although my question isn't specific to them (I think). I'...
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3answers
234 views

Dovecot imap send spam to junk

I am using Ubuntu 18.04 64 bit dovecot 2.2.33.2 spamassassin 3.4.1 amavisd The goal is to run an e-mail server, which I achieved already. I can access the e-mails at the server using Thunderbird ...
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247 views

HAProxy - IMAP, SMTP, POP3 - Multiple Servers

Please accept my apologies if this is off topic or does not apply on a more broad scale (i've searched the internet and can't seem to find a solution anywhere). I'm not sure if this is even possible, ...
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2answers
57 views

Cyrus - Fix quota usage

I have a mail infrastructure running on Cyrus (2.5.10), Postfix (2.7.1) and Perdition (1.19). Recently many users have been complaining about their quota usage being displayed wrongly. When trying ...
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1answer
228 views

Can't login to IMAP/POP3 server external

I have installed Postfix, Dovecot and MySQL via this tutorial (https://www.linode.com/docs/email/postfix/troubleshooting-problems-with-postfix-dovecot-and-mysql/). When I do the following command, I ...
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145 views

Dovecot SSL Failure (Postfix Working Fine)

We're trying to connect an e-mail client to our mail server. We have postfix and Dovecot configured and running on ubuntu. We can see that Dovecot is listening on the correct port using: $ sudo ...
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3answers
217 views

Are CNAME “imap…” and “smtp…” subdomains needed?

I'm running my Postfix email server. I have only 1 A dns record for it: mail.my_domain.com I'm able to connect to it, receive and send email through it using only this url. Namely, I don't have "smtp.....
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1answer
678 views

Login Fail for IMAP on Exchange Server 2016

I have deployed Exchange Server 2016. I am able to send email over 587 while I face Login failure over IMAP 993 and POP3 995. Over Microsoft Tool https://testconnectivity.microsoft.com/ IMAP Test ...
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116 views

FreeBSD Postfix Dovecot Roundcube - unable to login from Roundcube

i'm recieving such error : IMAP Error in /usr/local/www/apache24/data/roundcube/program/lib/Roundcube/rcube_imap.php (196): Login failed for test1@example.com from 1.2.3.4. AUTHENTICATE PLAIN: * OK ...
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277 views

Roundcube IMAP log — NO [AUTHENTICATIONFAILED] Authentication failed

system: Ubuntu 17.10 This is the error I am getting when trying to log in log-file /var/lib/roundcube/logs/imap: [17-Apr-2018 22:03:13 -0700]: <3aedeusd> [1116] S: * OK [CAPABILITY IMAP4rev1 ...
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222 views

Dovecot and deduplication based on the email message content, not the dovecot's Id

Problem I have an IMAP-only server and I want it to automatically de-duplicate messages. I am unable to make dovecot remove copies of "identical messages" based on their content. PD: I only need to ...
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90 views

How to escape characters in IMAP mailbox names?

I'm connecting to an IMAP server that uses . as the mailbox hierarchy delimiter. The mailbox names follow the schema "Other Users.login.Drafts", where "login" is replaced with a Linux user name. In ...
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124 views

Thunderbird sub folders grayed out after migrating to new mail server (postfix,dovecot,docker)

I migrated my old mail server (postfix,dovecot,...) to a new one (same services but with docker). In addition I changed the mail dir of the single account from .../domain.tld/name/Maildir to .../...
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1answer
133 views

IMAPCopy - Bad or invalid system flag \RECENT

I'm using IMAPCopy 1.04. During the copy process I get the following errors for many messages: Bad or invalid system flag \RECENT (messages with this error are not copied at all) What does it mean ...
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1answer
46 views

imap-login director is not restarted after each auth request

imap-login by default in dovecot mail server is restarted after every login request keeping security in mind to avoid leak of critical data. But in a director config, the imap-login director process ...
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1answer
150 views

DNS SRV records for IMAP are not seen or used

To the best of my knowledge, the below DNS records should work as a failover for my mail servers: example.com A 192.0.2.1 3600 www.example.com A 192.0.2.1 3600 ftp.example.com A ...
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1answer
244 views

Getting error with dovecot when authenticating user (Home directory not set for user)

I am trying to set up a relatively basic postfix/dovecot IMAP/SMTP server with a MySQL backend. It appears that the authentication is successful, I just seem to be getting this error: Initialization ...
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1answer
40 views

Is it possible to use a mail relay as a proxy from one port to another?

We have a server that needs to connect to an IMAP server outside of our network. Unfortunately, the server we need to connect to requires a connection on port 993. The problem is our host blocks port ...
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1answer
112 views

Timeout when connecting to remote imap server

I have a google compute cloud VM (Ubuntu 17.10) and I am trying to setup a mail daemon. I have installed postfix and dovecot according to this article (all steps followed exactly, from a fresh install)...
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2answers
677 views

How to make dovecot and postfix use the same mail directory

I'm trying to configure postfix and dovecot to connect to the same LDAP, and I kind of succeeded. But now, I have some discrepencies. The reproduction is as: I connect to dovecot in IMAP with ...
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1answer
249 views

cyradm delete mailbox permission denied

I have a new ClearOs 7 system. It has Cyrus IMAP installed. In trying to copy the mailboxes from the old server, I seem to have screwed up one of them. It has a folder called Junk E-mail which is only ...
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3answers
2k views

Dovecot cant connect to imaps 993

I am trying to set up a mail server in digitalocean VPS. The problem is that i cant telnet to 993 although firewall is inactive and dovecot is listening. Please tell me where i do wrong. I followed ...
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0answers
174 views

doveadm (dsync) to backup gmail (Gsuite) account — Connection Refused

i am trying to migrate email accounts away from G Suite (gmail Enterprise) and am not getting very far.. i've allowed 'less secure apps' and turned on IMAP (and POP) access (though, obviously, IMAP ...
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0answers
65 views

Mail for iOS error connecting to Courier IMAP, no password authentication

I’ve successfully installed postfix and Courier IMAP in an Ubuntu server 16.04 installation. I have set up a new user, set postfix to use the Maildir format, and created the Maildir directories in the ...
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0answers
46 views

Forward unencrypted imap traffic into TLS-enabled?

Specifically in this example, I'm looking toward the ProtonMail Bridge, which will soon be available for Linux. For those unaware, this sets up a local imap server that decrypts your mail and allows ...
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2answers
751 views

IMAP how to login with AUTH=LOGIN in console with OpenSSL

I have seen some servers that returns AUTH=LOGIN when I request the CAPABILITY of the IMAP server e.g: 1 CAPABILITY CAPABILITY IMAP4 IMAP4rev1 AUTH=LOGIN AUTH=PLAIN AUTH=XOAUTH2 SASL-IR ...
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1answer
201 views

How to copy mail data from Mac OS X Server 5.3.1 to New Server 5.3.1

We have a Mac OS X Server v5.3.1 that has been failing, but we have many good backups. As a matter of fact, the internal HDD had failed and we are currently running off of an image on a bootable ...
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1answer
56 views

How does Outlook cope with IMAP server change (MX)

What happens with an Outlook local inbox when there happens to be an IMAP server change (MX change) and the new IMAP server/mailbox is blank? Will Outlook retain already downloaded messages in it's ...
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1answer
66 views

Local email delivery to (remote) IMAP server

I need to deliver incoming mail from my local MTA into a (remote) IMAP mailbox. Is there a tool which can do that? I cannot deliver the mail via SMTP because the remote system's spam filters etc. are ...
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1answer
28 views

Exchange combined with another provider using imap

Given a mail infrastructure on a shared hosting environment using ~10 main email inboxes and ~30 email inboxes for other purposes, all via IMAP. We now want to migrate to Microsoft Exchange (using ...
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0answers
58 views

Gmail & GoDaddy - How to AMEND email settings?

I have no idea where else to turn to ask this! Stack Overflow admins sent me your way. I recently transfered a domain away from one host over to GoDaddy.com, and the person i did this for uses gmail ...
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2answers
598 views

Mailbox on-the-fly decryption (dovecot)

To avoid casual mailbox snooping for an IMAP server I am thinking of "transparent encryption" setup that would: Public key encrypt incoming messages at local delivery time Private key decrypt said ...
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1answer
120 views

How do the servers mark the email as read

I'm looking to know how servers mark emails as read and unread with IMAP or POP. I've logged into my server (using cPanel) and navigated to my mail directory and downloaded the same email file, ...
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1answer
1k views

Exchange IMAP Setup SSL & TLS

Regarding set-up of IMAP on exchange 2010 sp3, there are a couple of things I don't understand. 1) I have SSL v2 & v3 disabled on the server via registry. So how are clients able to connect to ...
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1answer
20 views

Reliability mechanisms in different IMAP servers

I've occasionally been burned when using IMAP to move messages from one folder to another - basically, having messages disappear into the ozone. One would think that a server would copy, confirm, ...
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1answer
200 views

Forbid IMAP clients create mailboxes in Dovecot

In this specific setup I want to forbid clients to create mailboxes other than the default ones. I searched for this in the documentation but found nothing. I'm using Dovecot with virtual users.
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0answers
380 views

Postfix: Temporary internal error / Dovecot: Initialization failed

Today I wanted to make a mail server, but it did not work. Can you help me ? I followed this tutorial: https://www.linode.com/docs/email/email-with-postfix-dovecot-and-mysql Errors obtained: Sep 19 ...
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1answer
105 views

SRV Records not visible, can not receive E-Mails [closed]

I set up a debian 8.7 linux server with the IP 123...1 and I pointed bla.example.org at it. (www.)example.org points on another Server 123...2. Now I installed mailcow on this server and I am using ...
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1answer
474 views

How to fix tls_sessions.db cyrusdb error?

Why there is no tls_sessions.db file and how to fix this error? So I finally decided to go with Cyrus for my mail server. (I'm still deciding exim4 or postfix though) I installed those packages: ...
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1answer
209 views

Horde Kronolith Authentication using IMAP

I have set up a Horde Groupware Webmail Edition server, primarily to use webmail (provided by the hosting provider) and calendar (provided by us). Authentication is set up using IMAP authentication ...